
iSMA-B-W0202 Modbus User Manual
version 1.2
Page 34 / 49
Modbus
Address
Dec
Address
Hex
Address
Register name
Access
Description
30087
86
0x56
SPECIAL INPUT 1 VOLTAGE Read Only
expressed in mV.
For current measurements, the formula
for the current:
I =
U
500
where: U – register value,
500 – value of attached resistance
Temperature is expressed in Celsius
degrees * 10
For a result, divide the registry value
by 10:
T =
registervalue
10
Selection of the type sensor is done
using registers from 40151 to 40152
for each input separately
30088
87
0x57
SPECIAL INPUT 2 VOLTAGE Read Only
30095
94
0x5E
SPECIAL INPUT
TEMPERATURE 1
Read Only
30096
95
0x5F
SPECIAL INPUT
TEMPERATURE 2
Read Only
30103
102
0x66
RESISTIVE INPUT 1 LSB
Read Only Special Input measure resistance 1 – 2
(30103-30104, 30105-30106)
Resistance measurement result
expressed in Ω
30104
103
0x67
RESISTIVE INPUT 1 MSB
Read Only
30105
104
0x68
RESISTIVE INPUT 2 LSB
Read Only
30106
105
0x69
RESISTIVE INPUT 2 MSB
Read Only
40134
133
0x85
MODBUS PROTOCOL TYPE
Read &
Write
Memory
RS485 Modbus protocol type
0 -> RTU, 1->ASCII
40136
135
0x87
RS485 BAUD RATE
Read &
Write
Memory
RS485 baud rate (40136)
40137
136
0x88
RS485 STOP BITS
Read &
Write
Memory
Stop bits (40137)
Supported values are 1 and 2
The default value 1
40138
137
0x89
RS485 DATA BITS
Read &
Write
Memory
Data bits (40138)
Supported values are 7 and 8
The default value 7
40139
138
0x8A
RS485 PARITY BIT
Read &
Write
Memory
Parity bit (40139)
The default value is 0 (no parity)
Allowed values:
Value
Description
0 (default)
none
1
Odd
2
Even
3
Always 1
4
Always 0
40140
139
0x8B
RESPONSE DELAY
Read &
Write
Memory
Response delay time (40140)
Delay in ms before sending response
The default value is 0.
40141
140
0x8C
WATCHDOG TIME
Read &
Write
Watchdog time (40141)
Time in second before watchdog reset